Header for water-tube boilers



March 11, 1930. w, ARMACQST 1,750,254

HEADER FOR WATER TUBE BOILERS Filed Jan. 23. 1928 M45: M Hem/coaxINVENTOR.

k, ATTORNEY.

Patented Mar. 11, 1930 UITE STATES PATENT OFFICE WILBUR H. ARMACOST, onNEVJ YORK, N. Y., ASSIGNOR 'ro THE sUrEnHEA'rER COMPANY, on NEW YORK, N.Y.

HEADER F03 WATER-TUBE BOILERS Application filed January 23, .1928.

This invention relates to boilers of the socalled horizontal water-tubetype and is particularly concerned with the means for supporting thesectional headers into which the ends of the water-tubes are expanded.The purpose of the invention is to provide novel means for supportingsuch headers.

The invention is illustrated in the drawing accompanying thisspecification, in which drawings Fig. 1 shows a lateral View of aportion of one of these headers with the attached tubes and the novelsupporting means; Fig. 2 shows a sectional view on line 2-2 of Fig. 1;Fig. 3 is a section on line 3-3 of Fig. 2; 5 Figs. 4, 5 and 6 are topviews similar to Fig.

2 showing modifications, each showing portions also of the adjacentheaders; and Fig. 7 is a section on line 77 of Fig. 6.

It will be understood that the water tubes a 11 which are shown with oneend secured into the header 2 have their other ends simi larly connectedto a corresponding header and that there is a series of such headers ateach end arranged side by side. All of this is according to the ordinaryarrangement.

By means of my invention it is feasible to use ordinary tubing circularin cross-section for these headers. The lower ends of the headers areclosed in any desired manner. 0 To close the upper end, a partition 8 iswelded in, some distance below the top 4 of the header 2. If desired,reinforcement can be added by oxyacetylene welding at 5. The tubes 1-1are rolled in in the ordinary manner, the necessary hand-holes for thispurpose (not shown) being provided opposite their ends.

To support each of these headers a rod or bolt 6 is securedin the upperopen end which is engaged by the hanger 7. The upper end of this hangeris supported in any desired manner on the supporting I-beams 8-8 orother stationary members. In the form shown, the hanger 7 passes througha plate 9 resting on the I-beams, its upper threaded end having on itthe nut 10.

In the form illustrated, two circulating pipes 11 and 12 open into theupper end of the header. The tube 11 is rolled in in the ordinary waythrough the hand-hole 13. 12

Serial No. 248,701.

is shown as secured in the partition 3. The tool for rolling it in isalso inserted through the handahole 13. To allow the tube 12 to be benttoward the drum with which it is to communicate without interfering withthe bolt 6, the wall of the open end is cutaway as at 14.

It will be evident that in the arrangement as described the projectingends of the bolts 6 prevent placing the headers in close contact witheach other. This may at times be objectionable, and the forms of theinvention shown in Figs. 5 to 7 obviate it. 7

In Fig. 4 the outer ends of the holes through which the bolt 6 extendsare slightly countersunk and the ends of the bolt are expanded to fillthe counterbore as at S -6 This permits placing the headers in contactwith each other.

In the form of Fig. 5 the bolts 6 are allowed to project as in the formfirst described, but they are each placed at such an angle that theprojecting ends do not interfere with the adjacent headers.

Figs. 6 and 7 illustrate a form in which the ends of the rod 6 do notextend through the walls but lie in opposite recesses in the interior ofthe walls. The shape of the recesses and the method of inserting the rodwill be clear from an inspection of the figure.

While I have shown and described; some specific forms of my invention,itwill be obvious that variations can be made in practice without losingthe spirit of the invention. Thus it will be clear that the inventionhas particular utility when headers of circular cross-section are used,but it is not limited to headers of this form. Headers which arerectangular in cross-section can have my invention applied to them. Thisand other Variations are intended to be within the scope of my claims.

I claim:

1. In a header of the class described having a closed upper end, themeans of support comprising an extension of the walls of the headerupward beyond the closure of the upper end, a bar engaging saidextension at two opposite points, a fixed support above the header, anda hanger engaging the bar and the support.

2. In a cylindrical header of the class described having a closed upperend, the means of support comprising an: extension of the header wallsbeyond the closure of the upper end, said extension being perforated attwo diametrically opposite points, a fixed support above the header, abar engaging the two perforations, and a hanger engaging the bar and thesupport.

3. In apparatus of the class described, the combination of a verticalrow of boiler tubes, a header to which one end of each is secured, anapertured closure for said header below the upper end of its wall, meansto support the header comprising a fixed support above the header andsuspension means engaging the support and the header wall above theclosure, and a circulator tube one end of which is secured in saidaperture.

4. In apparatus of the class described, the combination of avertical rowof boiler tubes, a header to which one end of each is secured, anapertured closure for said header below the upper end of its wall, meansto support the header comprising a fixed support above the header andsuspension means engaging the support and the header wall above theclosure, and a circulator tube one end of which is secured in saidaperture, said header wall above the closure being cut away at one sideand said circulator tube extending through the space so formed and itsend being bent toward the closure.

lVILBUR H. ARMACOST.

